mirror of
https://github.com/PaperMC/Paper.git
synced 2024-12-11 09:23:42 +01:00
51 lines
3 KiB
Diff
51 lines
3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
|
|
From: Aikar <aikar@aikar.co>
|
|
Date: Wed, 27 Feb 2019 22:18:40 -0500
|
|
Subject: [PATCH] Limit Client Sign length more
|
|
|
|
modified clients can send more data from the client
|
|
to the server and it would get stored on the sign as sent.
|
|
|
|
Mojang has a limit of 384 which is much higher than reasonable.
|
|
|
|
the client can barely render around 16 characters as-is, but formatting
|
|
codes can get it to be more than 16 actual length.
|
|
|
|
Set a limit of 80 which should give an average of 16 characters 2
|
|
sets of legacy formatting codes which should be plenty for all uses.
|
|
|
|
This does not strip any existing data from the NBT as plugins
|
|
may use this for storing data out of the rendered area.
|
|
|
|
it only impacts data sent from the client.
|
|
|
|
Set -DPaper.maxSignLength=XX to change limit or -1 to disable
|
|
|
|
diff --git a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
|
|
index 3dc23e2eaa5bf9c2bdbba366767be39a8de81b5f..8585cc9441674950dc8646f12698fb356cfc9e96 100644
|
|
--- a/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
|
|
+++ b/src/main/java/net/minecraft/server/network/ServerGamePacketListenerImpl.java
|
|
@@ -253,6 +253,7 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
|
|
private int aboveGroundVehicleTickCount;
|
|
private int receivedMovePacketCount;
|
|
private int knownMovePacketCount;
|
|
+ private static final int MAX_SIGN_LINE_LENGTH = Integer.getInteger("Paper.maxSignLength", 80);
|
|
private static final long KEEPALIVE_LIMIT = Long.getLong("paper.playerconnection.keepalive", 30) * 1000; // Paper - provide property to set keepalive limit
|
|
|
|
public ServerGamePacketListenerImpl(MinecraftServer server, Connection connection, ServerPlayer player) {
|
|
@@ -2862,6 +2863,15 @@ public class ServerGamePacketListenerImpl implements ServerPlayerConnection, Ser
|
|
|
|
for (int i = 0; i < signText.size(); ++i) {
|
|
TextFilter.FilteredText currentLine = signText.get(i);
|
|
+ // Paper start - cap line length - modified clients can send longer data than normal
|
|
+ if (MAX_SIGN_LINE_LENGTH > 0 && currentLine.getRaw().length() > MAX_SIGN_LINE_LENGTH) {
|
|
+ // This handles multibyte characters as 1
|
|
+ int offset = currentLine.getRaw().codePoints().limit(MAX_SIGN_LINE_LENGTH).map(Character::charCount).sum();
|
|
+ if (offset < currentLine.getRaw().length()) {
|
|
+ signText.set(i, currentLine = net.minecraft.server.network.TextFilter.FilteredText.passThrough(currentLine.getRaw().substring(0, offset))); // this will break any filtering, but filtering is NYI as of 1.17
|
|
+ }
|
|
+ }
|
|
+ // Paper end
|
|
|
|
if (this.player.isTextFilteringEnabled()) {
|
|
lines.add(net.kyori.adventure.text.Component.text(SharedConstants.filterText(currentLine.getFiltered())));
|